Earlier quoted context omitted.
That's a different issue. If we assume honest dealing, when you see a $1000 display going for $500, you would think you get a high-end product at a mid-range price. You may then inquire why it's on sale - is it used, is it older generation, does the shop need shelf space? Who knows. What should not be happening is that a product that has never sold for $1000 is presented as being worth $1000. If you want free market…
if you want the free market to work, consumers can’t use price to evaluate quality
It is like arguing that for free speech to work everybody has to write newspaper articles or that you personally need to be a programmer for opensource to be useful. These can be different people and for a free market (/free(dom) speech/free(dom) software) to work you need a sufficient number of qualified people.
So I wouldn't blame the consumers (btw this term always sounds like slur to me as compared to customers) for using price as a proxy. You can't expect them to get loaners, purchase testing equipment etc.. That should be tech journalists' job and then consumers can make an educated decision, which in turn ensures that price indeed is a good proxy.
Hence, blame the sorry state of tech reviews in the American market. What even are the reasonably good sites still left? I know of wirecutter (mixed), rtings, tftcentral and maybe prad.de. What are consumers supposed to base their evaluations on in your opinion?